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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e5a22ed5c52321d0b898a65c20beeb7f87e073d5751412b0852e3509db24503f' 
  AND token = 'tDEz1R/5uHUIPrp8P3IoEKCBnmAO5sjp6SYcjW6jlmw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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