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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b13890bcc2a954d8a7d946aada4c38e102406b32986de31775663e52d12c917f' 
  AND token = '2yKoC3P8mileM7zs20ZD3NjL5hlvhEFsdSUdH8CJR+o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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