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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5f2e45e552411c7bb32a3475694ca23ca95b5b023f7a7b205f097624529387b9' 
  AND token = 'Bi36zFL7W2/GwvZ66kKb9tkllbHGaFx9ONDSHl3LUpo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}