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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'dd32a3a94c6dd7aa384457f1ee867498c81250174aa65ef778bdcefa0b9e5532' 
  AND token = 'QkI4BfKYXq6jdFOebrMDnpEd2GxT/akko2fclOZdzyo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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