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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '22c701ba787d2b7cfa8cc7d64aa7c80df498ed744ce09b6d70e47bb31a2ffbad' 
  AND token = 'k7BN35vGezWdR0CVZcrAyF6laeXGBqIebh3BSDDkUHw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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