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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd125b2e6530034a0cf5a4e33aea6d457d596336b06895f617bd4227882026181' 
  AND token = 'lG/HIWgybP80yJ+k3aB4p9nKVNcKg1EF5BsUZ9ot8eU=' 
  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"
    }
  }
}