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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c080f5be574693c2a0d19184e1651283333b463a4d857a59bb506399f5d38774' 
  AND token = 'Ml16pcP/de6NDeG0/icrMKaCf0x/MsLxcJCXNE4A530=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00065

JSON explain

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