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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5d9d431b6c57b59f8de5541714fe18298e75083ec5d8e0e5efc4a2546834ae43' 
  AND token = 'NFY3WQBs4lf8G0s2JDfClfGJuxI9aOFOq0HX+TP77Kk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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