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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0d6f70fbd148969cbfc5f947153495652e5d0b4e4e7b99835416a1c13113515' 
  AND token = 'aiT1JF0ZcxSwI/rR3M1ABEGZ8hrGG7Puuj+kIswIcuo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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