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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b5792cb5e7c1c0c9e8cb7c7682848d8f9c8e0a46adab38c4db0f1b8d580bd5aa' 
  AND token = 'BBdV4WTi7wAPBv8MTA3x8gZD+v0FXvJmjG0wy8QL32g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}