Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8a81c8849ad893c6d996226e1ec2c2819037173da33e0b156a3cd20b384b6724' 
  AND token = 'zr4/dYD2RSBLvS3MWBoW52n/V/sT2CPp3bBNLEy4do4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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