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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a151b90ed4708c3dab334d64da135aba49a1f63270f3554aed8ea8cf65051ff6' 
  AND token = 'WcUjOB4099Us5g5ZAZIpqD12auCUv9brqMZ8ZajpIDY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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