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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3a36bd58df1d87af39ce15a6b25b7324af14b09a7377dc951ac46a6e6d441b24' 
  AND token = 'bSpul0cvI3Ks9YgGRlFYXQcYodPw1UZ32RD6H5LYbQE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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