Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b1c547ea56ce2d253cfc2ca820bde12ddd8e2d2d52ae2ced272db0b8cd702f66' 
  AND token = 'Ea8v3LqHtSpkIdUb+45zV0UBWWUCX+8H7azgmI7Sx1A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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