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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8f9a89b0574f54db54132de80df45b2053423c62a04a4a2a0157fd1ed4d8a935' 
  AND token = 'bhmJA3cUQMHRK58x0mn6Gn700NypLISd5HiPf8hIQl8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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