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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7130604b1333c5f6a87dafa9c7c60adf601a4f22181e4c710f9eefd282f39a98' 
  AND token = 'Rkqa6hnxDli+jl3aQV7rT8bEKSvJP/Km5TSW4TvvJc0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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