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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ba8c5f7e2f3ba14f457fdee7023f7a7f246b528a081c9dd01de4e2506b5883c1' 
  AND token = 'Q9oIe/4tMKMsl0LNVSCMjmsP2JsNsXArkEQQeNTQFY8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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