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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '393b3956f1047bcc39ae369e9d4f3506a85ea304d6cf57cfd94635717e47f676' 
  AND token = 'JP0kC7Ba8AAPIyg3sJn35mJeAIhRtcME6jRcS7pcxNw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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