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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bb84fd59096e483d27b162ed2f7dc10be0006a76b6bf16739ea623f3c311d632' 
  AND token = '/05wpFxQ6NRPx2juEOwQbcqGKh8D+H6OiKj3Ro+qPcE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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